original Fuel Injector Injection Valves 10R-0781 Replacement for 3412 Truck Engine, compatible with multiple engine series, designed for excavator and truck application original new injector

Built for the 3412 diesel engine platform, the 10R-0781 fuel injector assembly is an OEM remanufactured injection component. Operating within a mechanical unit injector system, it meters and pressurizes fuel before delivering it through precision nozzle orifices for atomization and combustion. Manufactured to OEM specifications, it is designed to support accurate fuel delivery, stable engine performance, efficient combustion, reduced fuel consumption, lower exhaust emissions and dependable operation under heavy-duty conditions.

Compatibility covers 3412, 3412B, 3412C and 3412D configurations, including industrial, marine, generator, power-unit and oilfield engines. Typical equipment uses include generator sets and backup power systems, marine propulsion and auxiliary engines, mining trucks, drilling equipment, crusher systems and mobile mining equipment. Cross references include 0R3639 / 0R-3639 and 4P9830 / 4P-9830. Because interchangeability can vary by engine arrangement, serial-number prefix, emissions level and calibration code, verification by engine serial number is recommended before ordering.

Precision-machined components, hardened internal parts, corrosion-resistant materials and OEM tolerance control support consistent delivery and durability. The injector is factory tested and intended for severe-duty service. For installation, clean the injector bore, inspect the cylinder-head seat, renew sealing washers and O-rings, and lubricate seals with clean diesel fuel. Install and torque retaining hardware according to the applicable service manual and engine specification, then bleed the fuel system.